So does anyone know history of why preserved with lye and not salt? Sea faring peoples, they had to know how to reduce sea water, so it is not like salt would not have been available. Plenty of fuel to run the kettles...
It is made from aged stockfish (air-dried whitefish) or dried/salted whitefish (klippfisk) and lye (lut). It is gelatinous in texture. Its name literally means "lye fish".
Lutefisk is dried whitefish (normally cod, but ling and burbot are also used) treated with lye. The first step is soaking the stockfish in cold water for five to six days (with the water changed daily). The saturated stockfish is then soaked in an unchanged solution of cold water and lye for an additional two days. The fish swells during this soaking, and its protein content decreases by more than 50 percent, producing a jelly-like consistency.
I guess I have my answer regarding the lye. My take is the lye has nothing to do with preserving, but is use to achieve the jelly-like consistency...something I am sure we all want in our fish!
Oh waiter...will you please run these ribs through a blender and bring them back to me, I am sure that consistency will enhance my eating experience...